JPS634342Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluorescent lamp holding device particularly suitable for use in a narrow and humid atmosphere such as in a cable laying tunnel.

Conventionally, this type of fluorescent lamp holding device consists of a transparent lamp protection cover 2 that covers a straight tube lamp 1 and a ballast cover 4 that covers a ballast 3 in parallel, as shown in FIG. There is a structure in which both covers are connected by L-shaped socket holders 5 and 6.

In this case, in order to join both ends of the socket holder in a water-tight manner, the end of the socket holder on the side facing the lamp protection cover 2 is connected to the screw ring 7 through an appropriate packing (not shown) since the lamp protection cover has a cylindrical shape. The packing is tightened to the lamp protection cover in the direction of pressure to maintain watertightness.

However, this device
and the ballast cover 4 into the L-shaped socket holder 5,
6, the height (H) is higher than that of the device shown in FIG. 2, which will be described later.

Another conventional waterproof fluorescent lamp holding device is shown in FIG. That is, this is a lamp protection cover 8 that covers a straight tube lamp.
and a lighting component case 9 that encloses a ballast, electrical components, etc., are arranged in series and joined watertightly. However, although this device is shorter in height than the one in FIG. 1, it is longer in length (L).

By the way, as is well known, in the cable installation tunnel, a plurality of shelves for storing cables are provided on both sides of the tunnel up to the ceiling, and the space including the central passageway is extremely narrow. Therefore, in a fluorescent lamp holding device that is usually mounted on the ceiling, the fluorescent lamp is installed in the transverse direction for the sake of lighting efficiency, and the direction is changed in the length direction only when replacing the lamp.
It is desired that both height and length be as small as possible.

It is also desired that this type of fluorescent lamp holding device be able to safely and easily replace the lamp, and to be able to easily hold and inspect the fluorescent lamp and lighting components.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fluorescent lamp holding device which can be made small in length and height, and which allows lamp replacement and maintenance and inspection to be carried out safely and easily.

According to the present invention, the lamp fixing frame including the straight tube lamp, the lighting parts case, the guide frame that slidably supports the lamp fixing frame, etc. are all covered with a protective tube made of a transparent material. The above objectives have been achieved.

Hereinafter, the present invention will be described with reference to illustrated embodiments.

3 and 4 show an embodiment of the present invention. In the figure, a straight tube type fluorescent lamp 10 is firmly supported by a lamp fixing frame 11. As shown in FIG. The lamp fixing frame 11 has a gutter shape, and both lower side edges 11a and 11b protrude downward. The frame 11 is supported by an inverted gutter-shaped guide frame 12 so as to be slidable in the longitudinal direction and detachable.

The guide frame 12 is a cap body 1 which will be described later.
Fixed rod 14 spanned between 7a and 18a
a, 14b. In a space surrounded by the lamp fixing frame 11 and the guide frame 12, a lighting component case 15 that encloses lighting components such as ballast electrical components is housed. Reference numeral 16 denotes a protective tube made of transparent plastic, such as polycarbonate, into a cylindrical shape, and encloses the aforementioned straight tube lamp 10, lamp fixing frame 11, guide frame 12, lighting parts case 15, etc. .

Caps 17 and 18 are attached to both ends of the protection tube 16.
They are fluid-tightly connected via rings 19a and 19b. One cap 17 consists of a cap body 17a and a connector tightening ring 17b for tightening the connector 20 on the outer end surface of the cap body 17a.
It consists of a cap body 18a and a lid 18b on its outer end surface which can be opened and closed as necessary.

A lead wire 21 connecting a lighting component (not shown) and a power source (not shown) is connected to the connector 20. Connector tightening ring 17b and lid 18
b are screwed into the cap bodies 17a and 18a via O-rings 19c and 19d, respectively.

A glow lamp 22 or an electronic starter is disposed in one of the cap main bodies 18a as required. However, if the rapid starter is incorporated into the ballast (not shown), there is no need to provide the glow lamp 22 or the like. 1 on the lamp fixing frame 11
A pair of socket members 23a and 23b are arranged, and a straight tube type fluorescent lamp 10 is inserted between these socket members.
is attached removably.

Projection 2 provided inside one cap main body 17a
4 and the lamp fixing frame 11 is provided with an electrical contact 25 that can be freely connected and separated. The electrical contact 25 is composed of a pin-shaped movable contact 27 attached to the protrusion 24 via a spring 26 and a fixed contact 28 attached to the lamp fixing frame 11. The movable contact 27 is arranged to be movable in the axial direction.

The fixed contact 28 is electrically connected to the lighting component inside the case 15, and the movable contact 27 is electrically connected to the connector 20. The lamp fixing frame 11 is
When the movable contact 27 and the fixed contact 28 are in contact with each other, the elasticity of the spring 26 pushes them toward the lid 18b of one cap, and the lid 1 of the other cap is pushed toward the lid 18b of one cap.
It is preferable that the end portion 11c is arranged so as to slightly protrude outward when the opening 8b is opened.

In other words, by doing this, when the lid 18b is closed, the end 11c of the lamp fixing frame will be pushed against the spring 26, which will prevent the electrical contact between the fixed contact 28 and the movable contact 27. It will be maintained even better.

A mounting frame 29 is attached to the top of the protection tube 16. This mounting frame 29 has both ends fixed to the cap bodies 17a and 18a, respectively, and is used for fixing to the ceiling of a tunnel or the like.

In the above configuration, when in use, with the lid 18b of one of the cap main bodies 18a open, the lamp fixing frame 11 to which the fluorescent lamp 10 is attached is supported by the guide frame 12, and the lamp is slid and pushed in to make it movable. The contact 27 and the fixed contact 28 may be brought into contact with each other, and the lid 18b may be closed.

In addition, when replacing the fluorescent lamp 10, the lid 18b
If the lamp fixing frame 11 is opened and the lamp fixing frame 11 is slid and pulled out, the fluorescent lamp 10 can also be pulled out at the same time, so that the lamp can be replaced by normal replacement means.

As described above, the fluorescent lamp holding device according to the present invention includes a guide frame, a lamp fixing frame including a straight tube lamp slidably and removably supported by the guide frame, and a lighting parts case in a protective tube. Since it has an integrally covered structure, it has the advantage of being small in length and height and having good waterproof properties. Further, according to the present invention, since the electric contacts are disposed within the protective tube so as to be able to be freely connected and separated, it is possible to safely and easily replace the lamp even under the energized state. Furthermore, by pulling out the lamp fixing frame, lighting components such as a ballast can be pulled out in addition to the fluorescent lamp, making maintenance and inspection easier.

[Brief explanation of the drawing]

1 and 2 are respectively front views showing a conventional fluorescent lamp holding device, FIG. 3 is a vertical sectional view showing an embodiment of the fluorescent lamp holding device according to the present invention, and FIG. 4 is a front view showing a conventional fluorescent lamp holding device. FIG. 1, 10... Fluorescent lamp, 4, 15... Lighting parts case, 11... Lamp fixing frame, 12...
...Guide frame, 16...Protection tube, 17, 18
... Cap, 25 ... Electrical contact.

Claims (1)

[Scope of utility model registration request] A lamp fixing frame that holds a straight tube lamp, a lighting component case held on the lamp fixing frame, a guide frame that supports the lamp fixing frame in a longitudinally slidable and removable manner, and the lamp fixing frame. , a protection tube made of a transparent body that encloses the lighting parts case and the guide frame all at once, caps connected to both ends of the protection tube in a liquid-tight manner, and a cap that can be freely attached and detached between one of the caps and the lamp fixing frame. A fluorescent lamp holding device comprising: an electrical contact provided therein;